-al -ol -up a-a a-b aaa aab aal aao aap aar aau ab- aba abb abl abo abp abr abu al- ala alb all alo alp alr alu aoa aob aol aoo aop aor aou ap- apa apb apl apo app apr apu ar- ara arb arl aro arp arr aru au- aua aub aul auo aup aur b-p b-u baa bab bal bao bap bar bau bba bbb bbl bbo bbp bbr bbu bla blb bll blo blp blr blu boa bob bol boo bop bor bou bpa bpb bpl bpo bpp bpr bpu bra brb brl bro brp brr bru bua bub bul buo bup bur buu l-p la- laa lab lal lao lap lar lau lba lbb lbl lbo lbp lbr lbu lla llb lll llo llp llr llu loa lob lol loo lop lor lou lpa lpb lpl lpo lpp lpr lpu lra lrb lro lrp lrr lru lua lub lul luo lup lur luu oaa oab oal oao oap oar oau ob- oba obb obl obo obp obr obu ola olb oll olo olp olu oo- ooa oob ool ooo oop oor op- opa opb opl opo opp opr or- ora orb orl oro orp orr oru ou- oua oul ouo oup our p-p paa pab pal pao pap par pau pba pbb pbl pbo pbp pbr pbu pla plb pll plo plp plr plu poa pob pol poo pop por pou ppa ppb ppl ppo ppp ppr ppu pra prb prl pro prp prr pru pua pub pul pup pur puu ra- raa rab ral rao rap rar rau rba rbb rbl rbo rbp rbr rbu rla rll rlo rlp rlr rlu roa rob rol roo rop ror rou rpa rpb rpl rpo rpp rpr rpu rra rrb rrl rrp rrr rru rua rub ruo rup rur ruu ua- uaa uab ual uao uap uar uau uba ubb ubl ubo ubp ubr ubu ula ulb ull ulo ulp ulr ulu uoa uob uol uoo uop uor up- upa upb upo upp upr upu ur- ura urb url uro urp urr uru uua uur uuu